The House star was on tour with his jazz band in 2014 when their bus was pulled over by officials as they crossed into Serbia for a concert.

He told fans after the incident that officers had taken his passport to make a copy of it, and now he has opened up about the incident, recalling how he was too terrified to question the actions of the gun-toting guards.

Hugh tells U.K. talk show host Graham Norton, "I was touring with my band and we crossed into Serbia. The border guards searched the bus and finally let us go. About an hour later we realised my passport hadn't been given back so we had to turn around and go back.

"The guard said, 'Sorry, I make photocopy for my wife.' My passport was still in the copier! He then asked for a selfie with me and you don't argue with a Serbian border guard with a machine gun!"